Add geofeed-tuner skill for RFC 8805 IP geolocation feeds (#1138)

* Add geofeed-tuner skill for RFC 8805 IP geolocation feeds

* Fix Codespell errors and apply  awesome-copilot contrib guidelines

* Fix Codespell errors and apply  awesome-copilot contrib guidelines

* Fix Codespell errors and apply  awesome-copilot contrib guidelines

* Update geofeed-tuner skill description and assets

Author: punit-fastah

.codespellrc

@@ -48,4 +48,4 @@ ignore-words-list = numer,wit,aks,edn,ser,ois,gir,rouge,categor,aline,ative,afte
 
 # Skip certain files and directories
 
-skip = .git,node_modules,package-lock.json,*.lock,website/build,website/.docusaurus,.all-contributorrc
+skip = .git,node_modules,package-lock.json,*.lock,website/build,website/.docusaurus,.all-contributorrc,./skills/geofeed-tuner/assets/*.json,./skills/geofeed-tuner/references/*.txt

docs/README.skills.md

@@ -131,6 +131,7 @@ See [CONTRIBUTING.md](../CONTRIBUTING.md#adding-skills) for guidelines on how to
 | [game-engine](../skills/game-engine/SKILL.md) | Expert skill for building web-based game engines and games using HTML5, Canvas, WebGL, and JavaScript. Use when asked to create games, build game engines, implement game physics, handle collision detection, set up game loops, manage sprites, add game controls, or work with 2D/3D rendering. Covers techniques for platformers, breakout-style games, maze games, tilemaps, audio, multiplayer via WebRTC, and publishing games. | `assets/2d-maze-game.md`<br />`assets/2d-platform-game.md`<br />`assets/gameBase-template-repo.md`<br />`assets/paddle-game-template.md`<br />`assets/simple-2d-engine.md`<br />`references/3d-web-games.md`<br />`references/algorithms.md`<br />`references/basics.md`<br />`references/game-control-mechanisms.md`<br />`references/game-engine-core-principles.md`<br />`references/game-publishing.md`<br />`references/techniques.md`<br />`references/terminology.md`<br />`references/web-apis.md` |
 | [gen-specs-as-issues](../skills/gen-specs-as-issues/SKILL.md) | This workflow guides you through a systematic approach to identify missing features, prioritize them, and create detailed specifications for implementation. | None |
 | [generate-custom-instructions-from-codebase](../skills/generate-custom-instructions-from-codebase/SKILL.md) | Migration and code evolution instructions generator for GitHub Copilot. Analyzes differences between two project versions (branches, commits, or releases) to create precise instructions allowing Copilot to maintain consistency during technology migrations, major refactoring, or framework version upgrades. | None |
+| [geofeed-tuner](../skills/geofeed-tuner/SKILL.md) | Use this skill whenever the user mentions IP geolocation feeds, RFC 8805, geofeeds, or wants help creating, tuning, validating, or publishing a self-published IP geolocation feed in CSV format. Intended user audience is a network operator, ISP, mobile carrier, cloud provider, hosting company, IXP, or satellite provider asking about IP geolocation accuracy, or geofeed authoring best practices. Helps create, refine, and improve CSV-format IP geolocation feeds with opinionated recommendations beyond RFC 8805 compliance. Do NOT use for private or internal IP address management — applies only to publicly routable IP addresses. | `assets/example`<br />`assets/iso3166-1.json`<br />`assets/iso3166-2.json`<br />`assets/small-territories.json`<br />`references/rfc8805.txt`<br />`references/snippets-python3.md`<br />`scripts/templates` |
 | [gh-cli](../skills/gh-cli/SKILL.md) | GitHub CLI (gh) comprehensive reference for repositories, issues, pull requests, Actions, projects, releases, gists, codespaces, organizations, extensions, and all GitHub operations from the command line. | None |
 | [git-commit](../skills/git-commit/SKILL.md) | Execute git commit with conventional commit message analysis, intelligent staging, and message generation. Use when user asks to commit changes, create a git commit, or mentions "/commit". Supports: (1) Auto-detecting type and scope from changes, (2) Generating conventional commit messages from diff, (3) Interactive commit with optional type/scope/description overrides, (4) Intelligent file staging for logical grouping | None |
 | [git-flow-branch-creator](../skills/git-flow-branch-creator/SKILL.md) | Intelligent Git Flow branch creator that analyzes git status/diff and creates appropriate branches following the nvie Git Flow branching model. | None |

skills/geofeed-tuner/SKILL.md

@@ -0,0 +1,5 @@
+202.125.100.144/28,ID,,Jakarta,
+2605:59c8:2700::/40,CA,CA-QC,"Montreal"
+150.228.170.0/24,SG,SG-01,Singapore,
+# It's OK for small city states to leave state ISO2 code unspecified
+2406:2d40:8100::/42,SG,SG,Singapore,